Definition of inconstant in English:

adjective

But fire is a strange stuff to make the origin of all things, for it is the most inconstant and changeable.

This Stoic tradition was quite clear that respect for human dignity could move us to appropriate action, both personal and social, without our having to rely at all on the messier and more inconstant motive of compassion.

Cuts in foreign affairs and defense spending, inattention to the tools of statecraft, and inconstant leadership are making it increasingly difficult to sustain American influence around the world.